31.
    发明专利
    未知

    公开(公告)号:DE3585721D1

    公开(公告)日:1992-04-30

    申请号:DE3585721

    申请日:1985-11-08

    Applicant: BASF AG

    Abstract: Prodn. of substd. piperidines of formula (I) comprises reacting the substd. glutardialdehyde (II) with R3NH2 and H2, at elevated temp and pressure, in presence of a hydrogenation catalyst. In the formulae, R1 and R2=alkyl, cycloalkyl, aryl or aralkyl, or together complete a 5 or 6-membered ring; one of R1 and R2 can also be H; R3=H or 1-4C alkyl.

    BRIGHTENING COLORED (ALPHA)-AMINOCARBOXYLIC ACIDS AND DERIVATIVES THEREOF

    公开(公告)号:CA966802A

    公开(公告)日:1975-04-29

    申请号:CA134473

    申请日:1972-02-10

    Applicant: BASF AG

    Abstract: 1369918 Brightening α-aminocarboxylic acids or salts BADISCHE ANILIN- & SODAFABRIK AG 10 Feb 1972 [11 Feb 1971] 6199/72 Heading C2C α-Aminocarboxylic acids or salts containing a unit of formula in which R 1 is hydrogen or substituted or unsubstituted o-hydroxyphenyl, R 2 is hydrogen, -CH 2 CH 2 OH or -CH 2 COOX, and X is H, Na or K, are brightened by irradiating a discoloured solution or suspension of the compound by radiation of wavelength below 7000 Š until significant bleaching has occurred. Examples treat solutions of NTA sodium salt, EDTA tetrasodium salt, and sodium diethylenetriamine penta-acetate; other suitable compounds are specified.

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